What do I do if my camera freezes an axis after animating?

I'm making a game where I animate my camera to look around right at the start of the game. The camera is controlled by the mouse and the animation runs as it's supposed to but afterwards my x-axis seems frozen and I can't look up/down. The y-axis moves like normal. If I disable the animation controller and run the game without the animation everything works as normal.

Edit in case someone stumbles upon this post:
I solved this by deactivating the animator component programmatically. It's far from perfect but it does the job. If anyone has a better way to solve it, please let me know!

 

Glad you solved it ! Locking now as its been answered